Installation of acoustical insulating material



Feb. 28 1939. Y J. K. PARK 3 6 INSTALLATION OF ACOUSTICAL INSULATING MATERIAL Filed Dec. 31, 1936 f4 4 [NVE NTOR BY John K.'Park.. m ATTORNEY Patented Feb. 28, 1939 UNITED STATES rA'rsNr orr cr.

HVSTAHATIGN F ACOUSTICAL INSULAT- ENG MATERIAL John K. Park, Newark, Ohio, assignor, by mesne assignments, to Owensporation, a corporation Application December'tl,

Corning Fiberglass Corof Delaware 1936, Serial No. 313,616

claims. (01. 20-h) 5 ternary to provide perforated panels in the form of pans, each containing a pad or layer of fibrous sound insulating material. This material is spaced or separated from the surface of the pan, as by means of small channels .or runners in the bottom of the-pan.

My invention comprises improved means for supporting and spacing insulating material from the bottom of the panel in which it is installed. An object of the invention is to provide such a supporting and spacing means which will insure substantially uniform spacing of the desired depth throughout the entire surface area.

A further object isto provide a spacing ma= terial for the purpose indicated, which will D81? 50 mit the use of less rigid types of acoustical pads or material than have heretofore been found practical. I

A still further object of the invention is to provide a spacing device of the character indi- 25 cated, which automatically centersitself within the panel or pan in which it is installed and will not slide out of position during installation.

Other objects of the invention will appear hereinafter.

Referring to the accompanying drawing:

Fig. 1 is a fragmentary perspective View of a structure comprising a ceiling provided with acoustical insulation;

Fig. 2 is a fragmentary vertical sectional view as showing an insulating panel;

Fig. 3 is a similar'view but showing the wire netting arranged with its parallel supporting wires extending in a direction at right angles to that of Fig. 2;

Fig. 4 is a perspective view of a separator;

Fig. 5 is a view showing means for crimping the wire netting of which the separators are composed; and Y Fig. 6 is a view similar to as modified construction.

Referring particularly to Fig. 1, the ceiling which is to be insulated may be of usual construction comprising parallel jolstsl0. Panels I l comprising heat insulating and sound deaden- 50 ing material, are attached to the lower surfaces of the joists. The means of attachment, as shown, comprises supporting strips l2 nailed to and extending lengthwise of-the 'joists. Each said strip, as shown, is in the form of a spring 5| clip adaptedto grip the upturned edges of Fig. 3, showing a zag fashion.

sheet metal pans H. The pans may be pro vided, as usual, with small openings l5 spaced at short intervals throughout the entire bottom surface of the pan.

Within each pan isjplaced an acoustical pad 5 It or layer of sound and heat insulating material. This pad, which may be coextensive laterally with the major dimensions of the pan in whichit is installed, preferably consists oi glass wool. This wool in its preferred form con 39 sists of glass fibersloosely matted or felted to provide a light flexible resilient mat, the millvidual fibers being of considerable length, rang ing from a fraction of an inch up to several inches or more, and of great fineness. 3

In order to support the mat and space it from the fioor'of the pan, a supporting device I 8 is provided which, as shown, is made of wire netting, the latter being crimped or bent in zig- This supporting material may consist of ordinary poultry netting comprising parallel'strands l9, each consisting of one or more wires, and interwoven wires extending transversely to'and connecting the strands it.

As shown. in Fig. 5, aroll ll of the netting is fed through a pair of crimping rails 22, thereby crimping or bending the netting into the zigzag formation shown. After the crimping operation, the material is cut to suitable lengths, forming the spacing and supporting elements I 8. These may be substantially equal in length and width with the pans II. The bends are preferably made, as shown, to coincide with the strands It. It will be observed that with this construction the strands is form. line contact supports for the 5 pad it, giving more eflective and reliable support than would otherwise be provided. For

example, if the crimps or bends were made intermediate the strands l9, point contacts would be made with the pad l6, causing the support to sink into the pad, thereby preventing uniform, reliable spacing of the pad from the floor of the pan.

When the panels are installed, the insulating pads it provide a practically continuous mat of the insulating material which, when made of glass wool such as above described, is particularly effective both as a heat insulating material and as a sound absorbing and deadening material.

In Fig. 6, I have shown a liner 24 interposed so between the spacer I I and the floor of the pan. This liner may be of a size and shape tosubstantially cover the floor otthe pan and is provided with perforations in register with the openlngs ii. The liner is made of a soft, sound absorloing material such as a soft paper or other fibrous material, or may consist of rubber or the like. The primary purpose of such liner is to absorb any sound vibrations or other form of vibration of the pan and prevent any rattling or sound which would be produced by such vibration or movement in contact with the spacer it.

Modifications may beresorted to within the spirit and scopeof my invention.

I claim:

1. The combination of a pad of loosely matted fibers, means providing a fiat surface over which the pad is mounted, and a support interposed between the pad and said surface for supporting the pad and spacing it from said surface, said support comprising openwork material having a zigzag conformation by which supporting contact of the said support with the bottom surface of the pad is provided at short intervals throughout said surface. 7

2. The combination of a pad of loosely matted fibers, means providing a flat surface over which the pad is mounted, and a support interposed be tween the pad and said surface for supporting the pad and spacing it from said surface, said support consisting of a crimped woven wire fabric in supporting contact with the bottom surface of said pad at short intervals throughout said surface.

3. The combination of a pad of loosely matted fibers, means providing a fiat surface over which the pad is mounted, and a support interposed between the pad and said surface for supporting the pad and spacing it from said-surface, said support consisting ofwire netting including parallel strands, said netting being bent or crimped to cause said strands to form line contact supports for the insulating pad.

4. The combination of a perforated sheet metal pan, a pad of sound deadening material mounted in said pan, and a spacing device interposed between said pad and the floor of the pan, said spacing device being substantially equal in length and width to the pan and comprising a wire fabric of zigzag conformation in supporting contact with the bottom surface of said pad at short in= tervals throughout said surface. 5. A building structure comprising a ceiling including acoustical insulating means, said insulating means comprising panels each consisting of a sheet metal pan and a pad of glass wool mounted therein, and spacing means between the floor of the panel and said pad comprising wire netting crimped to zigzag conformation and having a multiplicity of contacts with the bottom surface ofthe pad and distributed over substantially the entirety of said surface, whereby the pad is supported and spaced from the floor of the pan.

JOHN E. PARK. 

